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Aerial Application Model Extension Into The Far Field

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Paper number  034019,  2003 ASAE Annual Meeting . (doi: 10.13031/2013.14088) @2003
Authors:   Milton E. Teske, Harold W. Thistle
Keywords:   Gaussian, far-field effects, AGDISP, Lagrangian, model, aerial application

The addition of a Gaussian model extension to the Lagrangian model in AGDISP enables the aerial application model to extend its prediction distance to 20 km downwind, a distance well beyond its validation distance of 800 m, with a model whose restrictions and approximations are well understood and documented. This paper summarizes the Gaussian approach implemented here, and presents predictions of both models for the same aerial spray conditions. Transition between the two models, and possible far-field effects, are also discussed.

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